Much of the hype and fears around generative AI has been
about text. But there have also been rapid and dramatic developments in systems
that can generate images. In many cases, these share a similar structure to
text-based generative AI, but they can also be much weirder — and lend
themselves to some fun creative pursuits.
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Image generators are trained on billions of images, which
enable them to produce creations that were once the sole dominion of painters
and other artists. Sometimes experts can’t tell the difference between
AI-created images and actual photographs (a circumstance that has fueled
dangerous misinformation campaigns in addition to fun creations). And these
tools are changing the way creative professionals do their jobs.
Compared to products such as ChatGPT, image generating AI
tools are not as well developed. They require jumping through a few more hoops,
and may cost a bit of money. But if you’re interested in learning the ropes
there’s no better time to start.
AI PhotoshopLast week, Adobe added a generative AI feature into a beta
version of Photoshop, its iconic graphics software, and creators on social
networks including TikTok and Instagram have been buzzing about it.
I have a fair amount of experience with Photoshop. When I
tested the new feature, called “generative fill,” I was impressed with how
quickly and competently the AI carried out tasks that would have taken me at
least an hour to do on my own. In less than five minutes and with only a few
clicks, I used the feature to remove objects, add objects and swap backgrounds.
(To experiment with these tools, start by signing up for a
free trial of Adobe Creative Suite. Then, install the new Adobe Photoshop beta,
which includes generative fill.)
Once you have Photoshop beta installed, import a photo and
try these tricks:
To change a background: click the “object selection” icon
(it has an arrow pointed at a box), then under the Select menu, click “inverse”
to select the background. Next click the “generative fill” box and type in a
prompt — or leave it blank to let Photoshop come up with a new background
concept for you.
I used these steps to edit a photo of my corgi, Max. I typed
“kennel” for the prompt, and clicked “generate” to replace the background.
To remove objects: use the lasso tool. In a photo of my motorcycle,
I wanted to erase a tractor behind a fence in the background. I traced around
the tractor, and then I clicked the “generative fill” box and hit “generate”
without entering a prompt. The software correctly removed the tractor and
filled in the background while leaving the fence intact.
Photo editors at The New York Times do not enhance or alter
photos, or generate images using artificial intelligence. But my first thought
after testing generative fill was that photo editors working in other contexts,
such as marketing, could be soon out of work. When I shared this theory with
Adobe’s chief technology officer, Ely Greenfield, he said that it might make
photo editing more accessible, but he was optimistic that humans would still be
needed.
“I can make really pretty images with it, but frankly, I
still make boring images,” he said. “When I look at the content that artists
create when you put this in their hands versus what I create, their stuff is so
much more interesting because they know how to tell a story.”
I confess that what I’ve done with generative fill is far
less exciting than what others have been posting on social media. Lorenzo
Green, who tweets about AI, posted a collage of famous album covers, including
Michael Jackson’s “Thriller” and Adele’s “21” that were expanded with
generative fill. The results were quite entertaining.
(One note: If installing Photoshop feels daunting, a quicker
way to test Adobe’s AI is to visit the Adobe Firefly website. There, you can
open the generative fill tool, upload an image and click the “add” tool to
trace around a subject, such as a dog. Then click “background” and type in a
prompt like “beach.”)
More image generators
Tools like DALL-E and Midjourney can create entirely new
images in seconds. They work similarly to chatbots: You type in a text prompt —
the more specific, the better.
To write a quality prompt, start with the medium you’d like
to emulate, followed by the subject and any extra details. For example, typing
“a photograph of a cat wearing a sweater in a brightly lit room” in the DALL-E
prompt box will generate a photo just like that.
DALL-E, which is owned by Open AI, the maker of ChatGPT, was
one of the first widely available AI image generators that was simple to use.
For $15, you get 115 credits; one credit can be used to generate a set of four
images.
Midjourney, another popular image generator, is a work in
progress, so the user experience is not as polished. The service costs $10 a
month, and entering prompts can be a little more complicated, because it
requires joining a separate messaging app, Discord. Nonetheless, the project
can create high-quality, realistic images.
To use it, join Discord and then request an invitation to
the Midjourney server. After joining the server, inside the chat box, type
“/imagine” followed by a prompt. I typed “/imagine a manga cover of a corgi in
a ninja turtle costume” and it generated a set of convincing images.
Though it’s fine to type in a basic request, some have found
obscure prompts that generated exceptional results (Beebom, a tech blog, has a
list of examples). At Columbia University, Lance Weiler is teaching students
how to leverage AI, including Midjourney, to produce artwork.
Whichever tool you use, bear in mind that the onus is on you
to use this tech responsibly. Technologists warn that image generators can
increase the spread of deepfakes and misinformation. But the tools can also be
used in positive and constructive ways, such as making family photos look
better and brainstorming artistic concepts.
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